CVE-2026-92522
Description
In the Linux kernel, the following vulnerability has been resolved:
ACPI: processor: validate MADT IOAPIC entry bounds
The IOAPIC hotplug lookup parses both MADT and _MAT records directly. The MADT walk previously used a subtable's declared length to advance the cursor after only locating a generic header. The _MAT path likewise passed a generic header to the IOAPIC helper.
Validate that a current record has a complete generic header, that its declared length is contained in the available record range, and that a typed IOAPIC record contains the full fixed IOAPIC body before reading its fields. Use the same relation for both MADT and _MAT provider paths.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/2a5520065e76000f8c979d3d7b3d861ccaaecf1envd
- git.kernel.org/stable/c/2c50ffdc73f3a70d745d249f509fc290754121e6nvd
- git.kernel.org/stable/c/355bee5f11acb116cd256588631b4028ca562646nvd
- git.kernel.org/stable/c/4d8ecaa332c163f2b44aa5027bf061950b71b5f3nvd
- git.kernel.org/stable/c/5601bd81bc290a724ed47797d22c16cba4d7ed9fnvd
- git.kernel.org/stable/c/74d84320f8e37955eb286a7777843d554e6e75b2nvd
- git.kernel.org/stable/c/8e67b58c04990817ac2dbf8ae03353be6a358cd4nvd
- git.kernel.org/stable/c/ff82e3374e9103d046b2a82f4315d9a422ff097dnvd
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